A doctrine serves no purpose in itself, but it is indispensable to have one if only to avoid being deceived by false doctrines.
So if a college education is indispensable, the challenge as I see it is how to make it more accessible.
Vigorous independent and critical media are indispensable in a democracy.
A man’s ‘original and natural right’ to make all contracts that are ‘intrinsically obligatory,’ and to coerce the fulfillment of them, is one of the most valuable and indispensable of all human possessions.
Curiosity is idle only to those who fail to realize that it may be a very rare and indispensable thing.
Historical facts are the vital framework around which non-fiction writers construct their narratives; they are, quite simply, indispensable.
The graveyards are full of indispensable men.
Generality is, indeed, an indispensable ingredient of reality; for mere individual existence or actuality without any regularity whatever is a nullity. Chaos is pure nothing.
One can decide that the principal role of knowledge is as an indispensable element in the functioning of society, and act in accordance with that decision, only if one has already decided that society is a giant machine.
It is foolishly thought by some that democratical constitutions will not, cannot, last; that the States will quarrel with each other; that a king, or at least a nobility, are indispensable for the prosperity of a nation.