Who are we to tell anyone what they can or can't do?

No man's knowledge here can go beyond his experience.

The Commonwealth of Learning is not at this time without Master-Builders, whose mighty Designs, in advancing the Sciences, will leave lasting Monuments to the Admiration of Posterity; But every one must not hope to be a Boyle, or a Sydenham; and in an Age that produces such Masters, as the Great-Huygenius, and the incomparable Mr. Newton, with some other of that Strain; 'tis Ambition enough to be employed as an Under-Labourer in clearing Ground a little, and removing some of the Rubbish, that lies in the way to Knowledge.

Nature never makes excellent things, for mean or no uses: and it is hardly to be conceived, that our infinitely wise Creator, should make so admirable a Faculty, as the power of Thinking, that Faculty which comes nearest the Excellency of his own incomprehensible Being, to be so idlely and uselesly employ'd, at least 1/4 part of its time here, as to think constantly, without remembering any of those Thoughts, without doing any good to it self or others, or being anyway useful to any other part of Creation.

Men in great fortunes are strangers to themselves, and while they are in the puzzle of business, they have no time to tend their health either of body or mind.

Is it worth the name of freedom to be at liberty to play the fool?

[H]e that thinks absolute power purifies men's blood, and corrects the baseness of human nature, need read the history of this, or any other age, to be convinced to the contrary.