Over-population is a phenomenon connected with the survival of the unfit, and it is a mechanism which has created conditions favourable to the survival of the unfit and the elimination of the fit.

Civilization is being poisoned by its own waste products.

Every institution not only carries within it the seeds of its own dissolution, but prepares the way for its most hated rival.

The whole of creation, with all of its laws, is a revelation of God.

Faith always contains an element of risk, of venture; and we are impelled to make the venture by the affinity and attraction which we feel in ourselves.

Experience is a good teacher, but her fees are very high.

I have no fear that the candle lighted in Palestine years ago will ever be put out.