Date: 1729

"Reason exerts her pure, celestial, Rays, / To guide our Steps thro' Errors weary Maze: / But upstart Passions mount her rightful Throne, / And blindly push our vanquish'd Judgment on."

— Mitchell, Joseph (c. 1684-1738)

Date: 1759

"The violent emotions which at that time agitate us, discolour our views of things, even when we are endeavouring to place ourselves in the situation of another, and to regard the objects that interest us, in the light which they will naturally appear to him. The fury of our own passions constant...

— Smith, Adam (1723-1790)

Date: 1761

"It is not the soft power of humanity, it is not that feeble spark of benevolence which Nature has lighted up in the human heart, that is thus capable of counteracting the strongest impluses of self-love."

— Smith, Adam (1723-1790)

Date: 1783

"Although there may be some few exceptions, yet in general it holds, that when the bent of the mind is wholly directed towards some one object, exclusive, in a manner, of others, there is the fairest prospect of eminence in that, whatever it be. The rays must converge to a point, in order to glow...

— Blair, Hugh (1718-1800)

Date: 1785

"When we come to be instructed by Philosophers, we must bring the old light of common sense along with us, and by it judge of the new light which the Philosopher communicates to us."

— Reid, Thomas (1710-1796)

Date: 1790

"All the splendour of the highest prosperity can never enlighten the gloom with which so dreadful an idea must necessarily over-shadow the imagination; nor, in a wise and virtuous man, can all the sorrow of the most afflicting adversity ever dry up the joy which necessarily springs from the habit...

— Smith, Adam (1723-1790)