We are part of a globalized world that is reflected in problems associated with the development of the various dimensions of human endeavor. Intellectuals and scientists, who explain the complexity of the 21st century, emphasized on the fact that human beings swing between a strong consumer tendency and the capture of immediacy. There is a need for an ideal interconnected to values and ongoing actions tending towards sustainability. This is with the aim of legitimizing the various dimensions of human development where education forms a determining part. Taking into account the mentioned context, this work reflects on the work of the teacher, a key piece in the formation of students and institutional view. The literature will be reviewed and practical strategies will be proposed and focused on strengthening human understanding in global complexity. This is because teachers are expected to become the strategists that avert the great challenges faced by education in the 21st century global society.