“Men act like brutes in so far as the sequences of their perceptions arise through the principle of memory only, like those empirical physicians who have mere practice without theory.”

Taking mathematics from the beginning of the world to the time when Newton lived, what he had done was much the better half.

In my judgment an organic machine new to nature never arises, since it always contains an infinity of organs so that it can express, in its own way, the whole universe; indeed, it always contains all past and present times.

Everything that is possible demands to exist.

Why is there anything at all rather than nothing whatsoever?

It is worth noting that the notation facilitates discovery. This, in a most wonderful way, reduces the mind’s labour.

Thus God alone is the primary Unity, or original simple substance, from which all monads, created and derived, are produced.

It is God who is the ultimate reason things, and the Knowledge of God is no less the beginning of science than his essence and will are the beginning of things.

Virtue is the habit of acting according to wisdom.

God’s relation to spirits is not like that of a craftsman to his work, but also like that of a prince to his subjects.

To love is to find pleasure in the happiness of others.

It is a good thing to proceed in order and to establish propositions. This is the way to gain ground and to progress with certainty.

Each portion of matter may be conceived of as a garden full of plants, and as a pond full of fishes. But each branch of the plant, each member of the animal, each drop of its humors, is also such a garden or such a pond.

The world is not a machine. Everything in it is force, life, thought.

To love is to take delight in happiness of another, or, what amounts to the same thing, it is to account another’s happiness as one’s own.

Make me the the master of education, and I will undertake to change the world.

It’s easier to be original and foolish than original and wise.

Our perception is the lens we see the world through.

Reject your sense of injury and the injury itself disappears.

I think daughters can change the perception of their fathers.

When you cannot change a situation, you must change your perception of the person harming you in that situation, to stay in your power.

People dislike others for reasons that exists through their perception.

Life is a matter of perception. Everything is a riddle. You can simplify if you diversify your thoughts.

All that we see or seem is but a dream within a dream.

Intuition is perception via the unconscious that brings forth ideas, images, new possibilities and ways out of blocked situations.