Here life itself, life at its best and healthiest, awaits the caprice of the bullet. Let us see the development of the day. All else may stand over, perhaps for ever. Existence is never so sweet as when it is at hazard.

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

In the absence of any other proof, the thumb alone would convince me of God's existence.

We will now discuss in a little more detail the Struggle for Existence.

Man, like every other animal, has no doubt advanced to his present high condition through a struggle for existence consequent on his multiplication; and if he is to advance still higher, it is to be feared that he must remain subject to a severe struggle.

I'm laughing because I know the secret of life. And the secret of life is that I have validated my existence. I know that I am worth more than my house, my bank account, or any physical thing.