The phrase "an essential direction of" is correct and usable in written English.
It can be used when discussing a crucial or fundamental aspect or guidance related to a particular topic or field.
Example: "The research highlights an essential direction of future studies in renewable energy."
Alternatives: "a critical path of" or "a vital aspect of".
This small, brilliant book is a landmark in the history of thought: not only does it embody the philosophy of the 18th century, but it also defines the essential direction of the modern mind.
Camus recognizes that hope and the revolutionary drive are essential directions of the Western spirit, stemming from its entire world of culture, thought, and feeling.
The essential directions of correlated motions during dynamics were then calculated by diagonalizing the covariance matrix Cij.
6 In light of limited therapeutic strategies and the current lack of a vaccine, effective vector control methods are an essential component of the strategic direction to reduce dengue mortality and morbidity by 2020.
We can also go to the other direction: It is an essential part of the method that if a code number is given (many numbers simply do not code anything, but it can be decided which ones do), it is also possible to decode it in a unique way, that is, to reconstruct the unique original expression (or derivation) that it encodes.
Such seminars are a step in the right direction and should be an essential part of every agreement between credit card issuers and the universities.
Other nontechnical skills include the ability to design an original research plan that will lend direction to your project, an essential step of your graduate career that allows you to remain focused on your goals and on the experiments you need to do to finish your thesis.
From 1838 to 1843 he studied jurisprudence at the University of Kiel; inasmuch as the study of jurisprudence in Germany at the time was largely a study of Roman law, this had an essential influence on the direction of his future research.
The performers were from the Argento Chamber Ensemble, which, under the direction of Michel Galante, has become an essential source of adventurous new music in New York.
The determination of the energy demand in mountainous areas, which is an essential step in the direction of developing mountain energy policy, is analyzed in this paper.
