Never limit yourself because of others’ limited imagination; never limit others because of your own limited imagination.

The quote urges a double discipline: resist internalizing other people’s narrow expectations, and avoid projecting your own constraints onto others. In the first clause, “others’ limited imagination” stands for social stereotypes, gatekeeping, and conventional ideas of what is possible—pressures that can shrink ambition and self-conception. In the second, the speaker turns the critique inward, warning that even well-meaning people can become obstacles when they assume their experience defines everyone’s horizon. The symmetry makes it an ethical maxim as much as a motivational one: personal freedom and social responsibility are linked, because expanding possibility for oneself should coincide with expanding it for others.