"If you leave the smallest corner of your head vacant for a moment, other people's opinions will rush in from all quarters"

This quote by George Bernard Shaw is a reminder to be conscious of our ideas and to be familiar with the influence of other individuals's viewpoints. It recommends that if we do not actively fill our minds with our own ideas and beliefs, then we are vulnerable to the opinions of others. This can be dangerous, as it can cause us being swayed by the opinions of others, instead of forming our own beliefs. It is necessary to be familiar with the power of other people's opinions, and to be conscious of our own ideas and beliefs. We must make every effort to fill our minds with our own concepts and opinions, instead of allowing the viewpoints of others to take over. By doing this, we can make sure that our own beliefs and values are not eclipsed by the opinions of others.