The free trade movement in the middle of the last century represents the first conscious recognition of these new circumstances and of the necessity to adapt to them. ↗
You will certainly not doubt the necessity of studying astronomy and physics, if you are desirous of comprehending the relation between the world and Providence as it is in reality, and not according to imagination. ↗
I beg of you always to dwell upon the necessity of a thorough understanding of principles, in order to stop the vivacity of his mind, and please do not forget to meditate upon the subject of our discussion. ↗
When Socrates was about 30, and his father was long dead, he was still pursuing the art of sculpture, but from necessity, and without much inclination. ↗