Age is rarely despised but when it is, contemptible.

Every man that has felt pain knows how little all other comforts can gladden him to whom health is denied. Yet who is there does not sometimes hazard it for the enjoyment of an hour?

He that can swim needs not despair to fly; to swim is to fly in a grosser fluid, and to fly is to swim in a subtler. We are only to proportion our power of resistance to the different density of matter through which we are to pass. You will be necessarily upborne by the air if you can renew any impulse upon it faster than the air can recede from the pressure.

Many falsehoods are passing into uncontradicted history.

When a man is tired of London, he is tired of life; for there is in London all that life can afford.

Actions are visible, though motives are secret.

The joy of life is variety.