I awoke, only to see that the rest of the world is still asleep.
No human investigation can be called real science if it cannot be demonstrated mathematically.
Those who, in debate, appeal to their qualifications, argue from memory, not from understanding.
He who walks straight rarely falls.
Blinding ignorance does mislead us. O! Wretched mortals, open your eyes!
An arch consists of two weaknesses which, leaning one against the other, make a strength.