Reason may be the lever, but sentiment gives you the fulcrum and the place to stand on if you want to move the world.

The greatest act of faith is when a man understands he is not God.

But the moment you turn a corner you see another straight stretch ahead and there comes some further challenge to your ambition.

Every calling is great when greatly pursued.

Any new formula which suddenly emerges in our consciousness has its roots in long trains of thought; it is virtually old when it first makes its appearance among the recognized growths of our intellect.

On every stem, on every leaf,... and at the root of everything that grew, was a professional specialist in the shape of grub, caterpillar, aphis, or other expert, whose business it was to devour that particular part.

Taxes are the price we pay for a civilized society.