The pursuit of science leads only to the insoluble.

We are continually faced by great opportunities brilliantly disguised as insoluble problems.

We are all faced with a series of great opportunities - brilliantly disguised as insoluble problems.

Philosophy . . .consists chiefly in suggesting unintelligible answers to insoluble problems.

Problems that remain persistently insoluble should always be suspected as questions asked in the wrong way.

The pursuit of science leads only to the insoluble.

The almost insoluble task is to let neither the power of others nor our own powerlessness stupefy us.

We are all faced with a series of great opportunities - brilliantly disguised as insoluble problems.

We are continually faced by great opportunities brilliantly disguised as insoluble problems.