George Berkeley

"Esse est percipi"

"To be is to be perceived"

"All the choir of heaven and furniture of earth - in a word all those bodies which compose the frame of the world - have not any subsistence without a mind"

"If a tree falls in the forest and no one is around, does it make a sound?"

"Matter is a senseless, inactive substance"

"The same principles which at first view lead to skepticism, pursued to a certain point, bring men back to common sense"

"Truth is the cry of all, but the game of the few"

"I will draw the curtain and show you the picture"

"That neither our thoughts, nor passions, nor ideas formed by the imagination, exist without the mind, is what everybody will allow"

"We do not know the real intrinsic nature of any one thing"

"As a man thinks, so he becomes"

"The mind is not to be imposed upon, but to be engaged"

"I will try to be present, to be accounted for"

"If we had a keen vision and feeling of all truth, it would be like hearing the grass grow or the squirrel's heart beat"

"The world is my representation"

"There is not any other substance than Spirit"

"To be is either to be a substance or to be a mode of a substance"

"The love of truth ought to triumph over every other consideration"

"Whoever thinks a faultless piece to see, thinks what never was, nor is, nor e'er shall be"

"I am myself a more exacting judge of my acting than anyone could be"

"It is one thing to have knowledge of virtue, and another to conform the will to it"

"A little attention to the nature of sensible things will show us that, however we may abstract or divide them, they remain inseparably connected"

"Nature in its origin is nothing else but the divine will operating in and upon created spirits"

"God is a spirit, but he is not that spirit which you imagine yourselves to be, in as much as we are limited and dependent"

"I do not argue against the existence of any one thing that we can apprehend, either by sense or reflection"

"The grand doctrines of the existence of a God and the immortality of the soul are by this philosophy established on such solid foundations of reasoning as I shall venture to say is not to be shaken by the weak objections of infidels"

"Human knowledge consists only of ideas"

"Think nothing too high for thy aspiration, nothing too great for thy hope"

"We ought to act in the world as it is, and not as we think it should be"

"If the soul is immortal, it is not so in virtue of being a substance, but in virtue of divine preservation"