Small rooms or dwellings discipline the mind, large ones weaken it.
Therefore, O students, study mathematics and do not build without foundations.
He who thinks little errs much.
Music... is the shaping of the invisible.
Marriage is like putting your hand into a bag of snakes in the hope of pulling out an eel.
Weight is caused by one element being situated in another; and it moves by the shortest line towards its centre, not by its own choice, not because the centre draws it to itself, but because the other intervening element cannot withstand it.