Truths are more likely to be discovered by one man than by a nation
There is nothing more ancient than the truth.
We never understand a thing so well,and make it our own, as when we have discovered it for ourselves.
It is best not to go on for great quest for truth , it will only make you miserable
I can doubt everything, except one thing, and that is the very fact that I doubt. Simply put - I think, therefore I am
And thereby make ourselves, as it were, the lords and masters of nature.