People like us, who believe in physics, know that the distinction between past, present, and future is only a stubbornly persistent illusion.
There comes a time when the mind takes a higher plane of knowledge but can never prove how it got there.
If you have never failed, you have never tried anything new.
Joy in looking and comprehending is nature's most beautiful gift.
The hardest thing to understand in the world is the income tax.
The sceptic will say, 'It may well be true that this system of equations is reasonable from a logical standpoint, but this does not prove that it corresponds to nature.' You are right, dear sceptic. Experience alone can decide on truth.