#Necessary

"Rationalism is the enemy of art, though necessary as a basis for architecture."

"Man needs his difficulties because they are necessary to enjoy success."

"It is a profound and necessary truth that the deep things in science are not found because they are useful; they are found because it was possible to find them."

"The motive behind criticism often determines its validity. Those who care criticize where necessary. Those who envy criticize the moment they think that they have found a weak spot."

"War is just when it is necessary; arms are permissible when there is no hope except in arms."

"One does not have to be a philosopher to be a successful artist, but he does have to be an artist to be a successful philosopher. His nature is to view the world in an unpredictable albeit useful light."

"Dreams are necessary to life."

"Everyone discusses my art and pretends to understand, as if it were necessary to understand, when it is simply necessary to love."

"Necessity may be the mother of invention, but who is the father? Don’t look at me! I wore a condom."