“Nothing exists for itself alone, but only in relation to other forms of life.”

I have at least, as I hope, done good service in aiding to overthrow the dogma of separate creations.

I long to set foot where no man has trod before.

We are not here concerned with hopes or fears, only with truth as far as our reason permits us to discover it.

Hence, a traveller should be a botanist, for in all views plants form the chief embellishment.

It is not the biggest, the brightest or the best that will survive, but those who adapt the quickest.

The world will not be inherited by the strongest, it will be inherited by those most able to change.

The world will not be inherited by the strongest, it will be inherited by those most able to change.

An agnostic would be the more correct description of my state of mind.

How paramount the future is to the present when one is surrounded by children.

How paramount the future is to the present when one is surrounded by children.

Freedom of thought is best promoted by the gradual illumination of men’s minds which follows from the advance of science.

The mystery of the beginning of all things is insoluble by us; and I for one must be content to remain an agnostic.

Great is the power of steady misrepresentation.

There is no fundamental difference between man and animals in their ability to feel pleasure and pain, happiness, and misery.

Man is descended from a hairy, tailed quadruped, probably arboreal in its habits.

I would give absolutely nothing for the theory of Natural Selection, if it requires miraculous additions at any one stage of descent.

It is not without cause that men feel the burden of their existence, though they are themselves the cause of those burdens.

The secret to your existence is right in front of you. It manifests itself as all those things you know you should do but are avoiding.

Insight is not about arriving at better perspectives for the existing situation but seeing new possibilities. What you need for this is clarity within yourself.

Obstacles do not exist to be surrendered to, but only to be broken.

When existence reveals itself as existentially intolerable, thinking collapses in on itself. In such situations – in the depths—it’s noticing, not thinking, that does the trick.

You cannot leave and have me too I cannot exist in two places at once-when you ask if we can still be friends.

Only In Coexistence Is Sustained Existence Possible.

Ideologies are substitutes for true knowledge, and ideologues are always dangerous when they come to power, because a simple-minded I-know-it-all approach is no match for the complexity of existence.