 There is nothing so strange and so unbelievable that it has not been said by one philosopher or another. |
| One cannot conceive anything so strange and so implausible that it has not already been said by one philosopher or another. |
| The reading of all good books is like a conversation with the finest minds of past centuries. |
| You just keep pushing. You just keep pushing. I made every mistake that could be made. But I just kept pushing. |
| If you would be a real seeker after truth, it is necessary that at least once in your life you doubt, as far as possible, all things. |
| It is not enough to have a good mind; the main thing is to use it well. |
| I am accustomed to sleep and in my dreams to imagine the same things that lunatics imagine when awake. |
| I hope that posterity will judge me kindly, not only as to the things which I have explained, but also to those which I have intentionally omitted so as to leave to others the pleasure of discovery. |
| Each problem that I solved became a rule, which served afterwards to solve other problems. |
