When the province of physical theory was extended to encompass microscopic phenomena through the creation of quantum mechanics, the concept of consciousness came to the fore again. It was not possible to formulate the laws of quantum mechanics in a fully consistent way without reference to the consciousness.

The optimist regards the future as uncertain.

The unreasonable efficiency of mathematics in science is a gift we neither understand nor deserve.

[T]he laws of quantum mechanics itself cannot be formulated ... without recourse to the concept of consciousness.

The miracle of the appropriateness of the language of mathematics for the formulation of the laws of physics is a wonderful gift which we neither understand nor deserve.

It's nice the know the computer understands the situation, but I would like to understand it too.

The simplicities of natural laws arise through the complexities of the language we use for their expression.