It is one of the most saddening things in life that try as we may we can never be certain of making people happy whereas we can almost always be certain of making them unhappy.

It is one of the most saddening things in life that try as we may we can never be certain of making people happy whereas we can almost always be certain of making them unhappy.

The struggle for existence holds as much in the intellectual as in the physical world. A theory is a species of thinking and its right to exist is coextensive with its power of resisting extinction by its rivals.

The struggle for existence holds as much in the intellectual as in the physical world. A theory is a species of thinking and its right to exist is coextensive with its power of resisting extinction by its rivals.

There is no sea more dangerous than the ocean of practical politics none in which there is more need of good pilotage and of a single unfaltering purpose when the waves rise high.

There is no sea more dangerous than the ocean of practical politics none in which there is more need of good pilotage and of a single unfaltering purpose when the waves rise high.

If a man cannot do brain work without stimulants of any kind he had better turn to hand work it is an indication on Nature's part that she did not mean him to be a head worker.

If a man cannot do brain work without stimulants of any kind he had better turn to hand work it is an indication on Nature's part that she did not mean him to be a head worker.

Of moral purpose I see no trace in Nature. That is an article of exclusively human manufacture and very much to our credit.

Of moral purpose I see no trace in Nature. That is an article of exclusively human manufacture and very much to our credit.

Sit down before fact as a little child be prepared to give up every conceived notion follow humbly wherever and whatever abysses nature leads or you will learn nothing.

Sit down before fact as a little child be prepared to give up every conceived notion follow humbly wherever and whatever abysses nature leads or you will learn nothing.

The chess-board is the world the pieces are the phenomena of the universe the rules of the game are what we call the laws of Nature. The player on the other side is hidden from us.

The chess-board is the world the pieces are the phenomena of the universe the rules of the game are what we call the laws of Nature. The player on the other side is hidden from us.