In completing one discovery we never fail to get an imperfect knowledge of others.

It is no use speaking in soft, gentle tones if everyone else is shouting.

The wisdom of one generation will be folly in the next.

I have procured air [oxygen] ... between five and six times as good as the best common air that I have ever met with.

The greater part of critics are parasites, who, if nothing had been written, would find nothing to write.

In completing one discovery we never fail to get an imperfect knowledge of others of which we could have no idea before, so that we cannot solve one doubt without creating several new ones.

The more elaborate our means of our common sense is, the less the common sense it becomes.

When we say there is a GOD, we mean that there is an intelligent designing cause of what we see in the world around us, and a being who was himself uncaused.

Every man, when he comes to be sensible of his natural rights, and to feel his own importance, will consider himself as fully equal to any other person whatever

Orthodoxy, my Lord,: said Bishop Warburton, in a whisper, — orthodoxy is my doxy, — heterodoxy is another man's doxy.

We should like to have some towering geniuses, to reveal us to ourselves in color and fire.

There are two ways to be rich: One is by acquiring much, and the other is by desiring little.

Always dream high. Never let it down by inconsistent efforts. Your relentless labour & integrity make you successful in the long run.

The happy life is thought to be one of excellence; now an excellent life requires exertion, and does not consist in amusement.

I find skydiving really hard. I broke my back while skydiving when I was in the military, and for 18 months all my nightmares were about falling.

Within the brain's most secret cells, A certain lord chief justice dwells, Of sov'reign power, whom one and all, With common voice we reason call.

Limits are very important.

We never wholly shed anything that we have ever been.

All our efforts to defeat poverty and pursue sustainable development will be in vain if environmental degradation and natural resource depletion continue unabated.

In the end, as any successful teacher will tell you, you can only teach the things that you are. If we practice racism then it is racism we teach.

There are maybe one or two hours a day when I think I can play, but I get over that real quick once I realize the risk and my wife tells me, "Just take a seat."