Scientific knowledge is in perpetual evolution it finds itself changed from one day to the next.

• I have always detested any departure from reality, an attitude which I relate to my mother's poor mental health.
• It is with children that we have the best chance of studying the development of logical knowledge, mathematical knowledge, physical knowledge, and so forth.
• It is with children that we have the best chance of studying the development of logical knowledge, mathematical knowledge, physical knowledge, and so forth.
• The principle goal of education in the schools should be creating men and women who are capable of doing new things, not simply repeating what other generations have done.
• I have always detested any departure from reality, an attitude which I relate to my mother's poor mental health.
• The current state of knowledge is a moment in history, changing just as rapidly as the state of knowledge in the past has ever changed and, in many instances, more rapidly.
• It is with children that we have the best chance of studying the development of logical knowledge, mathematical knowledge, physical knowledge, and so forth.
• This means that no single logic is strong enough to support the total construction of human knowledge.
• The current state of knowledge is a moment in history, changing just as rapidly as the state of knowledge in the past has ever changed and, in many instances, more rapidly.
• Our problem, from the point of view of psychology and from the point of view of genetic epistemology, is to explain how the transition is made from a lower level of knowledge to a level that is judged to be higher.