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.

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

The enormous usefulness of mathematics in the natural sciences is something bordering on the mysterious and there is no rational explanation of it.

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

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.

... mathematics is the science of skillful operations with concepts and rules invented just for this purpose.