“If I held all the thoughts of the world in my hand, I would be careful not to open it.”

Nature is never so admired as when she is understood.

Hardly anyone knows how much is gained by ignoring the future.

I have lived one hundred years; and I die with the consolation of never having thrown the slightest ridicule upon the smallest virtue.

The judgment may be compared to a clock or watch, where the most ordinary machine is sufficient to tell the hours; but the most elaborate alone can point out the minutes and seconds, and distinguish the smallest differences of time.

A work of morality, politics, criticism will be more elegant, other things being equal, if it is shaped by the hand of geometry.

Mathematicians are like lovers. Grant a mathematician the least principle, and he will draw from it a consequence which you must also grant him, and from this consequence another.

We must always skim over pleasures. They are like marshy lands that we must travel nimbly, hardly daring to put down our feet.

As astronomy is the daughter of idleness, geometry is the daughter of property.

Since the princes take the Earth for their own, it’s fair that the philosophers reserve the sky for themselves and rule there, but they should never permit the entry of others.

It is beauty that begins to please, and tenderness that completes the cbarm.

Our sun enlightens the planets that belong to him; why may not every fixed star also have planets to which they give light?

A true philosopher is like an elephant; he never puts the second foot down until the first one is solidly in place.

A philospher sees the Earth as a large planet, travelling through the heavens, covered with fools

I feel nothing, apart from a certain difficulty in continuing to exist.

It takes time to ruin a world, but time is all it takes.

If I had my hand full of truth, I would take good care how I opened it.

All makers must leave room for the acts of the spirit. But they have to work hard and carefully, and wait patiently, to deserve them.

Examining the world in order to find consolation is very much like looking carefully over the pages of a great book in order to find our own name . … Whether we find what we want or not, our preoccupation has hindered us from a true knowledge of the contents.

I hope people will think very carefully about the future.

In terms of personal choices, let’s all think more carefully about where we get our protein from.

Your conscience is the measure of the honesty of your selfishness. Listen to it carefully.

You might not have the things you want, but if you check carefully, you got all you need.

Even very young children need to be informed about dying. Explain the concept of death very carefully to your child. This will make threatening him with it much more effective.

In fiction writing ideas have to be handled extremely carefully.