Science is a cemetary of dead ideas.

The less we read, the more harmful it is what we read.

The skeptic does not mean him who doubts, but him who investigates or researches, as opposed to him who asserts and thinks that he has found.

Science is a cemetery of dead ideas, even though life may issue from them.

What we believe to be the motives of our conduct are usually but the pretexts for it.

The tears of anguish irritate and excite; but those of repentance are the ones that wash.

The only way to give finality to the world is to give it consciousness.